Means for operating valves or cocks.



.No. 874,106. r PATENTED DEC. 17, 1907.

W. J. MoGARROLL.

MEANS FOR OPERATING VALVES 0R COCKS.

APPLICATION FILED MAY 18, 1907.

I WITNESSES: V I M024 5w]? I :WW

ATTORNEY.

UNITED STATES PATEN OFFICE.

WILLIAM J. MCCARROLL, OF PHILADELPHIA, PENNSYLVANIA, ASSIGNOR TOBURNHAM, WILLIAMS 8: CO., OF PHILADELPHIA, PENNSYLVANIA, A FIRM.

BEANS FOR OPERATING VALVES OR COCKS.

Specification of Letters Patent.

Patented Dec. 17, 1907.

Application filed May 18, 1907- Serial No. 374.498.

To all whom it may concern:

Be it known that I, WILLIAM J. MCCAR- ROLL. a. citizen of the UnitedStates. and aresident of the city and county of Philadelphia. State ofPennsylvania. have invented certain new and useful Improvements in Meansfor Operating Valves or Cocks, of which the following is aspecification.

My invention relates to improvements in 4 means for hydraulicallyoperating valves or carrying a detent 0 adapted to engage with cocks andmore particularly to improve-l ments in the means for this purposedescribed and illustrated by me in application for Lnlted States Patentfiled in the Patent i l l i I i Ofhce on August 17, 1906, Serial Number;

330,953, and allowed December 11, 1906.

In my invention above referred to, which was designed principally with aview to draining the condensed steam from the cylinders of locomotives,I made use of acylinder containing a. suitable liquid which liquid was,

by means of a piston and convenient means for operating the same, drivenanddrawn i through tubes to cylinders carrying means for operating draincocks connected in a suitable manner to the locomotive cylinders.

The means for operating the drain cocks or a notched segment d in ausual and well known manner. To the lower endofthe lever a is pivotallysecured one end of a rod 0 the other end of which is secured to a pistonf carried in a cylinder 9. This part of my device is precisely similarto a like part described in my former application.

To the forward-end of the cylinder 9 is connected a pipe h which leadsto one end of a cylinder 2' which carries a piston fitted with a cupwasher 7c and suitable rings Z of the usual construction.

in is a partition. carried by bridges -n which are carried bythe headpropero of the cylinder i. which closes off the cylinder above thepiston p is a steam pipe or nipple adapted to be secured to the cylinderto be drained in awell known manner.

r is a union by means of which the nipple p is removably connected tothe cylinder 2'.

s is a valve, within nipple p,- which is seated at t and furnished witha stem 11" which passes through partition '02 and which is adapted to beengaged a projection v: on

I the upper end of piston 7.

valves consisted of a piston. traveling atf right angles to the axis ofthese valves ori side of the cylinder below partition m.

drain cocks not only the friction between the E stems ofthe drain cockvalves and the cam like ends of the operating piston had to be iovercome but also more or less power was consumed in compressing thesprings engag- These faults, while not 1 ing these pistons.

so serious as to make the invention valueless, j are more or lessserious and the present invention is designed to obviate them.

In the drawing which accompanies this, a diagrammatic view of my presentinvention is shown.

a is an operating lever pivoted at b and 'w is a drain hole in the sideof the cylinder 1' above partition m. a: a drain hole in the y is a s)ider or stop in the nipple 1) above the top 0 the valve 8.

The cylinder 9, the pipe 71, and all connections leading therefrom tothe bottom of cyl inder i are filled with a liquid, with a nonfreezingliquid or oil if the apparatus is to be used in a cold climate. If it bedesired to open the valve 8 to )ermitthe escape of any liquid that maycollect in pipe or nipple p, the lever a is operated so as to cause therod e to advance the piston f in cylinder g, this causes the liquid inthis cylinder and in the pipe h to be forced into the cylinder i underthe cup washer k of the piston j and this causes this latter piston torise and to en- To facilitate and insure the complete draining of thecylinder i above the partition m the to and the rain hole w is on a linetherewith.

The drain hole 0; below the partition m affords escape for any liquidthat may past the valve stem 11 or past the piston j.

In the apparatus above described springs have been completely eliminatedand friction has been reduced by placing the piston j and the valve 5 inaxial alinement.

Having thus described my invention I claim as new and desire to secureby Letters Patent 1. In a valve operating means, in combination, avalve, a stem carried by or engaging said valve, a cylinder divided intotwo parts by a partition through which said stem passes furnished aboveand below said partition with perforations, a piston in the lowercomartment of said cylinder having a movement in the direction ofmovement of said valve, a liquid carrying pipe one end of whichcommunicates with said cylinder beneath i said drau

lpiston and the other end with a hyic cylinder, said latter cylinder, apiston of this partition is made convex i leak outlet in its side, apartition in said cylinder I the sides of said cylinder being 5 l insaid latter cylinder, and means for operate ing said piston.

2. In a valve operating means, in combination, a valve, a stem or rodcarried by or i engaging said valve, a cylinder having an I beneath saidoutlet through which partition 5 saidstem or rod asses, a piston in saidcyli inder beneath said partition, a liquid carry- 5 ing pipe one end ofwhich communicates with said cylinder beneath said piston and the otherend with a hydraulic cylinder, said latter cylinder, a piston in saidlatter cylinder, and means for operating said piston.

3. In an apparatus of the character described, in combination, acylinder having 3 two outlets in its side, a partition across saidcylinder between said outlets, a valve above said partition, a valvestem passing through Q said partition, a piston below said partition,and means for introducing and withdrawing 1 a liquid to or from saidcylinder beneath said piston.

' WILLIAM J. MCCARROLL.

\Yitnes'ses:

L FRED WooLLvEN,

' W. N. TUTTLE.

